Finding the Fourth Proportional to 707,032, 975,704.32 and 389,080

Step by Step Solution

1. Step 1: Write the proportion equation
   707,032 : 975,704.32 = 389,080 : x
2. Step 2: Convert to fraction form
   707,032/975,704.32 = 389,080/x
3. Step 3: Cross multiply
   707,032x = 975,704.32 × 389,080
4. Step 4: Simplify right side
   707,032x = 379,627,036,825.60
5. Step 5: Solve for x
   x = 379,627,036,825.60/707,032
6. Step 6: Final answer
   x = 536,930.49